GROB⁴Line vs IMA Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GROB⁴Line
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GROB-NET⁴Industry uses web technology to create cross-plant transparency throughout the production process. The applications within GROB-NET⁴Industry modularly developed by GROB, network and digitalize production processes to facilitate paperless communication – for even greater productivity. Through the management of users and solutions, GROB4Portal is the safe entry to the digital world. GROB4Line allows a GROB machine to be connected to the Internet. Consequently, it can be monitored and controlled via a smartphone. Combined with the notification function which sends messages (e.g. machine shutdown, alarm messages or job finished) to defined smartphones, the machine operator concerned can respond immediately and minimize unnecessary downtimes. • Mobile, dynamic display of machine data • Information about status, alarm messages, tool and NC program at a glance • E-mail notification for machine shutdown • Definition of alarm messages for proactive e-mail notification • Mobile monitoring of unmanned and lightly-manned machine operation • Historical timeline diagram
IMA Mobile
Monitor your CNC machines in real-time from your mobile device. Receive instant notifications for alarms and status changes to ensure efficient and effective facility operations. This app supports the Industrial Internet of Things (IIoT) by providing universal connectivity through the MTConnect standard.
- Real-time CNC status monitoring
- Instant alarm and status change notifications
- MTConnect compliant connectivity
- Supports 24/7 manufacturing operations
- Improves Overall Equipment Efficiency (OEE)
- Increases machine usage
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Mitsubishi Electric is ensuring that all manufacturers can enjoy the benefits of remote machine monitoring by putting your CNC’s status in the palm of your hand. Our IMA Mobile app is designed to help manufacturers enter the era of the Industrial Internet of Things (IIoT) by providing a simple method for monitoring your CNC machines. The IMA Mobile App allows you to remotely monitor machine controls utilizing MTConnect, an open standard that allows universal connectivity. By having your machine’s data readily available on your mobile device, you can be reassured your facility is operating efficiently and effectively. Real-time monitoring on: Control Mode Control State Program Overrides Get notifications on: Alarms Status changes Overrides Program changes Why do I need machine monitoring? Real-time monitoring and notifications provides: 24/7 manufacturing Assurance that projects stay on schedule Quick response to alarms Improvement of overall equipment efficiency (OEE) Increased machine usage More accurate bidding for projects Is this a Mitsubishi-exclusive product? No, IMA Mobile can be used to monitor any MTConnect compliant CNC. Do I need anything other than this app to monitor my CNC’s? Yes, you will need MTConnect compliant CNCs (Such as Mitsubishi Electric CNCs with our IMA Adapter) connected to a computer running on Windows with an Internet connection. How do I get that set up so I can monitor my CNC’s? Contact Mitsubishi Electric at contracts@meau.com, 847-478-2520, or visit us at us.mitsubishielectric.com/fa/en/support/services/imamobile
Screenshots
Verdict
The clearest difference is update cadence: GROB⁴Line at every 2 months against IMA Mobile's every 16 months. IMA Mobile's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GROB⁴Line ships an update every 2 months, IMA Mobile every 16 months. The most recent releases landed on October 8, 2026 and September 29, 2026 respectively.
| Parameter | GROB⁴Line | IMA Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (5 ratings) — better |
| Number of ratings | — | 5 — better |
| Update frequency | Every 2 months — better | Every 16 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | GROB-WERKE GmbH & Co. KG | Mitsubishi Electric Automation, Inc. |
In-app purchases
GROB⁴Line
No in-app purchases
IMA Mobile
No in-app purchases









